Vacuum Pumps

Single Stage Bare Shaft Liquid Ring Vacuum Pumps

Choosing the correct vacuum pump for your application can be a difficult task. There are many different styles of pumps made and used for various processes and applications. Below you is a quick comparison chart of the pros and cons of various pump technologies.

For the reasons shown below, liquid ring pumps are the most frequently used pumps for many of the process applications that Wintek is involved in. It is rugged, can be sealed with the process solvents, and is relatively low maintenance.

Vacuum Pump TypeTypical
Ability to Handle
Process Carryover
Initial Capital CostMaintenance FrequencyRepair Difficulty
Liquid Ring Water or Solvent-Sealed> 30 Torr*HighCooling WaterMediumLowLow
Liquid Ring Oil-Sealed> 15 Torr*High
(Oil may get contamintated)
Dry Screw> 0.1 TorrLow to MediumSmall Amount of Water and Purge GasHighLowHigh
Oil-Lubricated Rotary Vane1 - 150 TorrLowNoneLowHighLow
Rotary Piston0.001 - 100 TorrMediumNoneLow to MediumMediumHigh

* Liquid Ring Operating Range can be extended down to 0.03 Torr with additional technology